Question

hey can you prove (a+b)²= (a-b)²+4ab?

Answer 1

(a+b)^2 =a^2 +b^2 +2ab equation 1

(a-b)^2 =a^2 +b^2 -2ab equation 2

(a+b)^2 =(a-b)^2+2ab

(a+b)^2 =(a-b)^2 +2ab +2ab

(a+b)^2 =. (a-b)^2 +4ab